一种高熔体强度聚丙烯树脂及制备方法

High melt strength acrylic resin and preparation

Abstract

本发明涉及一种高熔体强度聚丙烯的制备方法,该方法将聚丙烯、带双键的单体、二硫代氨基甲酸盐类物质反应共混。该方法既能够明显提高聚丙烯的熔体强度,又能够显著抑制反应过程中聚丙烯的降解,还能大大的降低多官能团单体的用量,节约成本。拉伸强度(MPa)高达:39;拉伸模量(MPa)高达:810;断裂伸长率(%)为:738;结晶温度(℃)为:113-225;熔融指数(g/10min)为:0.5-2.0;熔体强度(cN)为16-36;凝胶含量(%)可以达到0;对熔体的加工性能无不良影响,所制备的高熔体强度聚丙烯适应于发泡、热成型、薄膜吹塑以及挤出涂覆等应用领域。
The invention relates to a preparation method of high-melt-strength polypropylene. In the method, reactive blending is carried out to polypropylene, monomer with double bonds and dithiocarbamates. The method can significantly improve the melt strength of polypropylene, greatly inhabit the degradation of polypropylene in the reaction process, also greatly decrease the amount of polyfunctional monomer, and save manufacturing cost. The tensile strength can reach 39MPa; the tensile modulus 810MPa; the elongation at break 738 percent; crystallization temperature 113 DEG C to 225 DEG C; the melt index 0.5g/10min to 2.0g/10min; the melt strength 16cN to 36cN; and the gel content 0 percent. No bad effect is brought to the processing performance of the melt and the high-melt-strength polypropylene prepared is applicable to application fields, such as foaming, thermoforming, film blowing and extrusion coating and the like.

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Cited By (3)

    Publication numberPublication dateAssigneeTitle
    CN-103865176-AJune 18, 2014中国石油天然气股份有限公司Preparation method of high-melt-strength polypropylene
    CN-104592451-AMay 06, 2015贵州大学High-grafting-ratio maleic anhydride graft polypropylene material and preparation method thereof
    CN-105924584-ASeptember 07, 2016贵州大学耐环境应力开裂的长链支化高密度聚乙烯材料及其制备方法